JN0-214 Exam Dumps - Cloud Associate (JNCIA-Cloud)

OpenStack is an open-source cloud computing platform that provides various services for managing compute, storage, and networking resources. To provision abare-metal serverin OpenStack, theIronicservice is required. Let’s analyze each option:

A. Ironic

Correct:OpenStack Ironic is a bare-metal provisioning service that allows you to manage and provision physical servers as if they were virtual machines. It automates tasks such as hardware discovery, configuration, and deployment of operating systems on bare-metal servers.

B. Zun

Incorrect:OpenStack Zun is a container service that manages the lifecycle of containers. It is unrelated to bare-metal provisioning.

C. Trove

Incorrect:OpenStack Trove is a Database as a Service (DBaaS) solution that provides managed database instances. It does not handle bare-metal provisioning.

D. Magnum

Incorrect:OpenStack Magnum is a container orchestration service that supports Kubernetes, Docker Swarm, and other container orchestration engines. It is focused on containerized workloads, not bare-metal servers.

Why Ironic?

Purpose-Built for Bare-Metal:Ironic is specifically designed to provision and manage bare-metal servers, making it the correct choice for this requirement.

Automation:Ironic automates the entire bare-metal provisioning process, including hardware discovery, configuration, and OS deployment.

JNCIA Cloud References:

The JNCIA-Cloud certification covers OpenStack as part of its cloud infrastructure curriculum. Understanding OpenStack services like Ironic is essential for managing bare-metal and virtualized environments in cloud deployments.

For example, Juniper Contrail integrates with OpenStack to provide networking and security for both virtualized and bare-metal workloads. Proficiency with OpenStack services ensures efficient management of diverse cloud resources.

Theopenstack server listcommand provides information about virtual machine (VM) instances in the OpenStack environment. Let’s analyze the exhibit and each statement:

Key Information from the Exhibit:

The output shows details about themyvSRXinstance:

Status: ACTIVE(indicating the instance is running).

Networks: VN-A-10.1.0.3(indicating the instance is part of a specific network).

Image: vSRX3(indicating the instance was created using a custom image).

Flavor: vSRX-Flavor(indicating the instance was created using a custom flavor).

Option Analysis:

A. The myvSRX instance is using a default image.

Incorrect:The image namevSRX3suggests that this is a custom image, not the default image provided by OpenStack.

B. The myvSRX instance is a part of a default network.

Incorrect:The network nameVN-A-10.1.0.3indicates that the instance is part of a specific network, not the default network.

C. The myvSRX instance is created using a custom flavor.

Correct:The flavor namevSRX-Flavorindicates that the instance was created using a custom flavor, which defines the CPU, RAM, and disk space properties.

D. The myvSRX instance is currently running.

Correct:TheACTIVEstatus confirms that the instance is currently running.

Why These Statements?

Custom Flavor:ThevSRX-Flavorname clearly indicates that a custom flavor was used to define the instance's resource allocation.

Running Instance:TheACTIVEstatus confirms that the instance is operational and available for use.

JNCIA Cloud References:

The JNCIA-Cloud certification emphasizes understanding OpenStack commands and outputs, including theopenstack server listcommand. Recognizing how images, flavors, and statuses are represented is essential for managing VM instances effectively.

For example, Juniper Contrail integrates with OpenStack Nova to provide advanced networking features for VMs, ensuring seamless operation based on their configurations.

To deploy a Kubernetes application with all its required resources packaged together, a tool that supports templating and variable management is needed. Let’s analyze each option:

A. A YAML manifest should be used for the application.

Incorrect:

While YAML manifests are used to define Kubernetes resources, they do not provide a mechanism to package multiple resources or define variables at deployment time. Managing complex applications with plain YAML files can become cumbersome.

B. A Helm chart should be used for the application.

Correct:

Helmis a package manager for Kubernetes that allows you to define, install, and upgrade applications usingcharts. A Helm chart packages all the required resources (e.g., deployments, services, config maps) into a single unit and allows you to define variables (viavalues.yaml) that can be customized at deployment time.

C. An Ansible playbook should be run for the application.

Incorrect:

Ansible is an automation tool that can be used to deploy Kubernetes resources, but it is not specifically designed for packaging and deploying Kubernetes applications. Helm is better suited for this purpose.

D. Kubernetes imperative CLI should be used to run the application.

Incorrect:

Using imperative CLI commands (e.g.,kubectl create) is not suitable for deploying complex applications. This approach lacks the ability to package resources or define variables, making it error-prone and difficult to manage.

Why Helm?

Packaging:Helm charts bundle all application resources into a single package, simplifying deployment and management.

Customization:Variables defined invalues.yamlallow you to customize the deployment without modifying the underlying templates.

JNCIA Cloud References:

The JNCIA-Cloud certification emphasizes tools for managing Kubernetes applications, including Helm. Understanding how to use Helm charts is essential for deploying and maintaining complex applications in Kubernetes environments.

For example, Juniper Contrail integrates with Kubernetes to provide advanced networking features, ensuring seamless operation of applications deployed via Helm charts.